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La·grange(lə-grānj′, -gränj′, lä-gräNzh′), Comte Joseph Louis 1736-1813.
French mathematician and astronomer. He developed the calculus of variations (1755) and made a number of other contributions to the study of mechanics.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biography) Comte Joseph Louis (ʒozɛf lwi). 1736–1813, French mathematician and astronomer, noted particularly for his work on harmonics, mechanics, and the calculus of variations
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
La•grange(ləˈgreɪndʒ, -ˈgrɑndʒ, -ˈgrɑ̃ʒ)
Joseph Louis, Comte, 1736–1813, French mathematician and astronomer.
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